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421 mateuszvis 1 
/* This file is part of the SvarCOM project and is published under the terms
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 * of the MIT license.
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 *
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 * Copyright (C) 2021-2022 Mateusz Viste
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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 * DEALINGS IN THE SOFTWARE.
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 */
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/*
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 * rmdir
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 */
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static enum cmd_result cmd_rmdir(struct cmd_funcparam *p) {
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  const char *dname = p->argv[0];
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  unsigned short err = 0;
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  if (cmd_ishlp(p)) {
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    nls_outputnl(24,0); /* "Removes (deletes) a directory" */
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    outputnl("");
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    nls_outputnl(24,1);/* "RMDIR [drive:]path" */
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    nls_outputnl(24,2);/* "RD [drive:]path" */
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    return(CMD_OK);
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  }
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  if (p->argc == 0) {
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    nls_outputnl(0,7); /* "Required parameter missing" */
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    return(CMD_FAIL);
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  }
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  if (p->argc > 1) {
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    nls_outputnl(0,4); /* "Too many parameters" */
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    return(CMD_FAIL);
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  }
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  if (p->argv[0][0] == '/') {
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    nls_outputnl(0,6); /* "Invalid parameter"); */
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    return(CMD_FAIL);
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  }
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  _asm {
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    push ax
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    push dx
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    mov ah, 0x3a   /* delete a directory, DS:DX points to ASCIIZ dir name */
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    mov dx, [dname]
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    int 0x21
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    jnc DONE
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    mov [err], ax
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    DONE:
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    pop dx
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    pop ax
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  }
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  if (err != 0) {
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    nls_outputnl_doserr(err);
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    return(CMD_FAIL);
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  }
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  return(CMD_OK);
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}